Directly open all your applications from your USB..
There is almost a portable version to all latest applications.
Check this awesome site.
Portableapps
It offers a wide range of softwares..
That can directly run from your USB now carry your stuff with yourself..

See the list they Offer

Applications

Accessibility

Firefox Accessibility Extension – Make Firefox more accessible
On-Screen Keyboard Portable – Easily access an on-screen keyboard
Virtual Magnifying Glass Portable – A full-featured screen magnifier

Development

Notepad++ Portable – A full-featured text editor with syntax highlighting
Nvu Portable & KompoZer Portable – The easy-to-use Nvu web editor
XAMPP – Apache, mySQL, PHP, phpMyAdmin, etc in one package

Education

Stellarium Portable – portable planetarium

Games

DOSBox Portable – classic DOS games to go
Jooleem Portable – simple and addictive puzzle game with great music and visuals
LBreakout2 Portable – breakout-style arcade game similar to Arkanoid
Mines-Perfect Portable – a classic hunt-for-mines game with advanced features
PokerTH Portable – classic Texas Hold Em style poker at its best
Sudoku Portable – the wildly popular and addictive puzzle game

Graphics & Pictures

GIMP Portable – Photo and Image Editor

Internet

FileZilla Portable – the full-featured FTP client
FireFTP Extension (for Firefox) – a lightweight extension
Miranda IM Portable – chat with AOL, MSN and Yahoo users in a customizable interface
Mozilla Firefox, Portable Edition – the award-winning web browser that’s safe and secure
Mozilla Thunderbird, Portable Edition – the handy email client
Nvu Portable & KompoZer Portable – the easy-to-use webpage editor
Pidgin Portable – chat with AOL, MSN and Yahoo users in an easy-to-use interface
PuTTY Portable – lightweight telnet and SSH client
Sage Extension (for Firefox) – A full-featured RSS extension
WinSCP Portable – SFTP, FTP and SCP client

Music & Video

Audacity Portable – A simple audio editor and recorder
BonkEnc Portable – extract, convert, and encode audio
CoolPlayer+ Portable – Lightweight, fast, easy-to-use audio player
MPlayer Portable – Full-featured movie player with support for most video formats
VirtualDub Portable – video processing and capture utility
VLC Media Player Portable – An easy to use media player that plays most audio and video formats

Office

AbiWord Portable – a lightweight word processor compatible with Microsoft Word files
GnuCash Portable – accounting, expenses and financial management
Lightning Extension (for Thunderbird) – A lightweight extension for your calendar and tasks
Mozilla Sunbird, Portable Edition – Calendar and task management with a familiar interface
Mozilla Thunderbird, Portable Edition (Address Book) – Email client’s built-in address book with import/export functions
OpenOffice.org Portable – word processor, spreadsheet, presentations with Microsoft compatibility
PDFTK Builder Portable – split, collate, watermark and password protect PDF documents
PNotes Portable – stick notes to go
SpeedCrunch Portable – an intuitive algebraic calculator
Sumatra PDF Portable – a lightweight PDF viewer
Task Coach Portable – to do list and task manager